- 1(current)
Q. No.Consider the given two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
| Statement I: | Sponges exhibit a cellular level of organization. |
| Statement II: | Cnidarians have a tissue level of organization. |
| 1. | Statement I is correct but Statement II is incorrect. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is incorrect but Statement II is correct. |
Subtopic: Â Phylum Porifera |
 81%
Level 1: 80%+
Hints
Euplectella [Venus Flower Basket], shown in the figure below, belongs to:
| 1. | Porifera | 2. | Cnidaria |
| 3. | Ctenophora | 4. | Platyhelminthes |
Subtopic: Â Phylum Porifera |
 67%
Level 2: 60%+
Hints
Sponges are mostly:
| 1. | Asymmetrical | 2. | Radially symmetrical |
| 3. | Bilateraly symmetrical | 4. | Biradially symmetrical |
Subtopic: Â Phylum Porifera |
 93%
Level 1: 80%+
Hints
Which of the following is not a feature of Porifera?
1. Exclusively marine animals
2. Presence of a water transport or a canal system
3. Sexes are not separate
4. Internal fertilization and indirect development
Subtopic: Â Phylum Porifera |
 63%
Level 2: 60%+
Hints
Subtopic: Â Phylum Porifera |
 91%
Level 1: 80%+
Hints
Body having meshwork of cell, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum:
| 1. | Porifera | 2. | Mollusca |
| 3. | Protozoa | 4. | Coelenterate |
Subtopic: Â Phylum Porifera |
 83%
Level 1: 80%+
Hints
The collared flagellated cell shown in the given figure is called as a:
| 1. | Choanocyte and helps sponges in movement of water through their canal system |
| 2. | Choanocyte and helps sponges in reproducing asexually under favourable conditions |
| 3. | Cnidocyte and helps sponges in catching their prey by paralyzing them |
| 4. | Colloblast and helps sponges in sticking to a surface |
Subtopic: Â Phylum Porifera |
 62%
Level 2: 60%+
Hints
Identify the incorrect statement regarding sponges:
| 1. | Water enters the sponge body through ostia into a spongocoel from where it goes out through the osculum. |
| 2. | Body is supported by a skeleton made up of spicules or spongin fibres. |
| 3. | Sexes are not separate. |
| 4. | Fertilization is external. |
Subtopic: Â Phylum Porifera |
 86%
Level 1: 80%+
Hints
Consider the given two statements regarding the water flow through the bodies of sponges as shown in the diagram.
| I: | Most sponges work rather like chimneys: they take in water at the bottom and eject it from the osculum ("little mouth") at the top. |
| II: | The inner surface is covered with choanocytes where the wave-like motion of the whip-like flagella drives water through the sponge's body. |
| 1. | I is correct and II is incorrect. |
| 2. | I is incorrect and II is correct. |
| 3. | I is correct and II is also correct. |
| 4. | I is incorrect and II is also incorrect. |
Subtopic: Â Phylum Porifera |
 73%
Level 2: 60%+
Hints
Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Spongilla | P. | Sea-fan |
| B. | Euspongia | Q. | Brain coral |
| C. | Gorgonia | R. | Fresh Water sponge |
| D. | Meandrina | S. | Sea-pen |
| E. | Pennatula | T. | Bath sponge |
| A | B | C | D | E | |
| 1. | T | R | P | Q | S |
| 2. | R | T | P | Q | S |
| 3. | T | R | Q | S | P |
| 4. | R | T | S | P | Q |
Subtopic: Â Phylum Porifera |Â Phylum Coelenterata |
 80%
Level 1: 80%+
Hints
- 1(current)
Q. No.
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